Control of crystal morphology in energetic drop-on-demand inkjet method Online publication date: Mon, 19-Oct-2020
by Ruirui Zhang; Jun Luo; Hongcheng Lian; Lehua Qi
International Journal of Nanomanufacturing (IJNM), Vol. 16, No. 4, 2020
Abstract: Nano-energetic materials have attracted the worldwide attention since they play an important role in fabricating insensitive high-energy explosives, micro-energetic devices, and explosive detectors. Here, we report a simple, but an effective strategy to control droplet coalescence during inkjet printing, as a major variable, to tailor the nanoscale morphology of energetic materials produced upon evaporation of all-liquid inks. We expect to achieve energetic materials with nanoscale particles by integrating the deposition and the nanocrystallisation of energetic droplets in one step. A proprietary uniform energetic micro-droplet printing equipment is utilised to reveal the influence of temperature, frequency on the particle size of energetic materials. Uniform line, with the particle size between nanometre and microns, is successfully obtained, showing the feasibility of the proposed method for preparing the microscale charge of nano-energetic materials. We also discussed the effect of droplet coalescence on the crystal morphology.
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